Malicious PDF — malware analysis report

Static analysis result for SHA-256 1363b329c87249f9…

MALICIOUS

PDF

32.8 KB Created: 2021-07-06 16:34:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b964393172d4c4124c7022c4c4fb0483 SHA-1: bce7514dbe777013194181272c206f2878559be3 SHA-256: 1363b329c87249f9f8a7a9b8fe9ad11d907e99fa16d1c580637524f065c64c94
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document employs a lure of free game hacks and generators to entice users. It contains a high number of external links, many pointing to other PDF files, suggesting a link farm or SEO manipulation tactic to drive traffic. The ML classifier strongly indicated maliciousness, and the presence of numerous game-related lures reinforces this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/835599320/is-tiktok-free-game-hack PDF link annotation
    • http://perpus.stikesphi.ac.id/repository/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/roblox-girl_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/robux-party-com-for-robux-free_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/pokemon-go-free-bundle_GM1094591345.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-free-download-pc_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/redboy-v2-jailbreak-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-robux-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/get-free-items-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3F 21496 bytes
SHA-256: 26737d5aa19da759f902f2b63efb3b81103bed9956630e258180bb0da6fd1f5e
font_01_sfnt_off00005e30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E30 17972 bytes
SHA-256: 1ad9b968f8d868dc9306eb656e42f80411177ac895833eed5c4e9bc3c7375aa9

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